Microstructural study of nickel thin films by pulsed laser deposition

Lefevre, Gauthier; Saitzek, Sebastien; Blanchard, Florent; Ferri, Anthony; Roussel, Pascal; Desfeux, Rachel; SAYEDE, Adlane

Type de document :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Autre communication scientifique

URL permanente :

http://hdl.handle.net/20.500.12210/61382

Titre :

Microstructural study of nickel thin films by pulsed laser deposition

Auteur(s) :

Lefevre, Gauthier [Auteur]

Saitzek, Sebastien [Auteur]

UCCS Équipe Couches Minces & Nanomatériaux
Blanchard, Florent [Auteur]

Ferri, Anthony [Auteur]

UCCS Équipe Couches Minces & Nanomatériaux
Roussel, Pascal [Auteur]

Desfeux, Rachel [Auteur]

UCCS Équipe Couches Minces & Nanomatériaux
SAYEDE, Adlane [Auteur]

UCCS Équipe Couches Minces & Nanomatériaux

Titre de la manifestation scientifique :

E-MRS 2019 SPRING MEETING

Ville :

Nice

Pays :

France

Date de début de la manifestation scientifique :

2019-05-27

Discipline(s) HAL :

Chimie

Résumé en anglais : [en]

Nickel is a ferromagnetic transition metal with a fcc structure, it has a low electrical resistivity and a good resistance to oxidation. Nickel has recently shown benefits in a wide range of domains, from catalysis to ...
Lire la suite >Nickel is a ferromagnetic transition metal with a fcc structure, it has a low electrical resistivity and a good resistance to oxidation. Nickel has recently shown benefits in a wide range of domains, from catalysis to energy storage devices. In particular, nickel magnetization makes it useful in several topical fields such as magnetic resonance imaging or spin-controlled electronic devices. In this context, developing novel and specific nickel thin films are of important interest, especially for nanotechnology. In this work, thin films of nickel achieved on (100)- and (110)-oriented SrTiO3 substrates using a pulsed laser deposition method are presented. The surface morphology and structural properties were investigated by XRD and AFM. Epitaxial growth was highlighted by pole figures. Phi scans and reciprocal space mapping, however, reveal that the films growth on (110)-SrTiO3 have two in-plane and out-of-plane orientations. The unit cell of nickel is rotated in the plane of the film by ±5° and out of the plane by ±3.7°. Surface energy modeling by first principles calculations makes it possible to explain the observed growth by low surface energy anisotropy. In addition, oxidation resistance of the films has been studied by in situ high-temperature XRD. Results show the formation of a NiO oxide layer which retains the initial orientation of the Ni film. Depending on the substrate, the Ni corrosion temperature varies from 375°C to 500°C. Such difference is linked to their density and surface morphology, and results are in agreement with AFM analysis. Furthermore, thin films exhibit a homogeneous and nanostructured surface.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Couches minces & nanomatériaux (CMNM)

Date de dépôt :

2022-03-08T13:50:57Z

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